SPNEGO authentication is not supported on this client

I have a webservice in a Maximo installation which is running on a Websphere server with application authentication enabled, it is SSO/LDAP.

I'm trying to test the webservice via SOAPUI and just get SPNEGO authentication is not supported on this client all the time.  I have added auth to the request choosing all options including SPNEGO/Kerberos but no joy what so ever.

I've followed the steps in the following: -

https://www.soapui.org/soap-and-wsdl/spnego/kerberos-authentication.html

and still get the same.  I've tried correct credentials and rubbish ones and get the same constantly.

I've attached some extracts from the soapui log and http log

I'm using SoapUI 5.2.1

Any idea's?

Cheers

Carl